<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title></title>
<style>
.box{
	width:300px;
	height:300px;
	background:url(tg.png) no-repeat center;
	border:30px solid rgba(0,0,0,0.5); 
	-webkit-background-clip:text;
	padding:50px; 
	font:bold 120px/150px "微软雅黑"; 
	text-align:center;
	color:rgba(0,0,0,0); 
	transition:1s;
}
.box:hover{ 
	background-position:-200px -200px;
	}
</style>
</head>
<body>
<div class="box">尚硅谷</div>
</body>
</html>
